Nail.



M. HER MMMMM K.

NAIL.

APPLIOAT 11111111111111111 4.

UNITEI) STATES PATEN T CFFICE NAIL.

Specification of Letters Patent.

Patented Oct. 3, 1905.

Application filed December 6, 1904. Serial No. 235,689.

Referring to the accompanying drawings for a more complete explanation of my invention, Figure 1 is an enlarged sectional view of my nail. Fig. 2 illustrates the manner of fastening abutting pieces together with such a nail. Fig. 3 shows the concave channel corrugated.

In toe-nailing the ends or sides of boards or other woodwork together it is necessary to drive the nail at such an inclination through one part that it will enter the part against which the first one abuts, and thus hold the two together. It is difi icult to drive the nail at such an angle that it will properly join these two parts, as the nail will either take too little hold on one or the other part or the point may pass entirely through the second portion and be objectionable on thisaccount.

It is the object of my invention to so construct the nail as to insure its driving properl y into both the parts which are to be united, and this I eifect by a novel construction of the point of the nail.

As shown in the drawings, A is the nail, having theusual or any suitablehead 2. The opposite end of the nail has a curved edge 3, and it is cut away, as shown at 4, so as to make a concave channel upon the side opposite to the edge referred to. This channel has its greatest depth at the outer end, where it meets and forms an edge in conjunction with the curved edge 3, and the channel decreases in depth and finally merges into the surface of the nail ata point some distance from the entering end, as shown at 5. When such a nailis to be driven,

it is placed in contact with the wood through which it is to be driven, with the concaved 5 channel downward, so that being driven at an inclination the curved edge 3 will be uppermost and the concaved channel will be presented downwardly. l/Vhen driven into the wood, the action of this channel, which is preferably made convex in the plane of the axis of the nail, will be to gradually curve the nail, so that it passes through the first piece-of wood, as at 6, on a slight curvature, said ourvature increasing as it passes into the part 7 until the nail has been driven to its head, when it will be found that the nail is curved so that the point is seated entirely withinthe second portion 7 of the parts to be united. In order to insure the more perfect holding of the nail thus driven, the entering end of the nail may be slightly corrugated, or the interior of the channel may be formed with slight corrugations.

The concave end of the nail with the shoulders projecting upon each side of the concavity serves to maintain the nail in position with the concavity always downward or axially in the line in which it is desired to have the nail move and prevents the nail from rolling orv twisting to either side.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. A nail having a head upon one end, the opposite end having one side forming a substantially curved edge, and agrooved channel extending from said edge diagonally backward and upward along the nail-shank.

2. A nail having a head at one end, a sub stantially curved edge at the entering end, a grooved channel forming a junction with said edge and extending to a point distant therefrom upon the opposite side of the nail-shank, the bottom of said channel being convexed in a plane taken through said channel and the axis of the nail.

3. A nail having a head at one end, a diag onally-grooved channel extending from the -edge upon one side of the entering end to the opposite side of the nail-shank, said channel having transverse corrugations.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

MARTIN HERMELIN K.

WVitnesses:

JOHN W. KooH, FRANK J. HENNESSY. 

